Move mtp descriptors into separate source, add tests
Functionfs descriptors are moved into MtpDescriptors.cpp.
Added assertions and tests to ensure that descriptors aren't
unintentionally changed, and bug numbers in comments for
future context.
Test: updated MtpFfsHandle_test passes
Bug: 67367056
Change-Id: I90eb5e48a687f366b8919621718e976e83b5b064
diff --git a/media/mtp/MtpDescriptors.cpp b/media/mtp/MtpDescriptors.cpp
new file mode 100644
index 0000000..d9b6060
--- /dev/null
+++ b/media/mtp/MtpDescriptors.cpp
@@ -0,0 +1,260 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "MtpDescriptors.h"
+
+namespace android {
+
+const struct usb_interface_descriptor mtp_interface_desc = {
+ .bLength = USB_DT_INTERFACE_SIZE,
+ .bDescriptorType = USB_DT_INTERFACE,
+ .bInterfaceNumber = 0,
+ .bNumEndpoints = 3,
+ .bInterfaceClass = USB_CLASS_STILL_IMAGE,
+ .bInterfaceSubClass = 1,
+ .bInterfaceProtocol = 1,
+ .iInterface = 1,
+};
+
+const struct usb_interface_descriptor ptp_interface_desc = {
+ .bLength = USB_DT_INTERFACE_SIZE,
+ .bDescriptorType = USB_DT_INTERFACE,
+ .bInterfaceNumber = 0,
+ .bNumEndpoints = 3,
+ .bInterfaceClass = USB_CLASS_STILL_IMAGE,
+ .bInterfaceSubClass = 1,
+ .bInterfaceProtocol = 1,
+};
+
+const struct usb_endpoint_descriptor_no_audio fs_sink = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = 1 | USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = MAX_PACKET_SIZE_FS,
+};
+
+const struct usb_endpoint_descriptor_no_audio fs_source = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = 2 | USB_DIR_OUT,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = MAX_PACKET_SIZE_FS,
+};
+
+const struct usb_endpoint_descriptor_no_audio intr = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = 3 | USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ .wMaxPacketSize = MAX_PACKET_SIZE_EV,
+ .bInterval = 6,
+};
+
+const struct usb_endpoint_descriptor_no_audio hs_sink = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = 1 | USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = MAX_PACKET_SIZE_HS,
+};
+
+const struct usb_endpoint_descriptor_no_audio hs_source = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = 2 | USB_DIR_OUT,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = MAX_PACKET_SIZE_HS,
+};
+
+const struct usb_endpoint_descriptor_no_audio ss_sink = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = 1 | USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = MAX_PACKET_SIZE_SS,
+};
+
+const struct usb_endpoint_descriptor_no_audio ss_source = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = 2 | USB_DIR_OUT,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = MAX_PACKET_SIZE_SS,
+};
+
+const struct usb_ss_ep_comp_descriptor ss_sink_comp = {
+ .bLength = sizeof(ss_sink_comp),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+ .bMaxBurst = 6,
+};
+
+const struct usb_ss_ep_comp_descriptor ss_source_comp = {
+ .bLength = sizeof(ss_source_comp),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+ .bMaxBurst = 6,
+};
+
+const struct usb_ss_ep_comp_descriptor ss_intr_comp = {
+ .bLength = sizeof(ss_intr_comp),
+ .bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
+};
+
+const struct func_desc mtp_fs_descriptors = {
+ .intf = mtp_interface_desc,
+ .sink = fs_sink,
+ .source = fs_source,
+ .intr = intr,
+};
+
+const struct func_desc mtp_hs_descriptors = {
+ .intf = mtp_interface_desc,
+ .sink = hs_sink,
+ .source = hs_source,
+ .intr = intr,
+};
+
+const struct ss_func_desc mtp_ss_descriptors = {
+ .intf = mtp_interface_desc,
+ .sink = ss_sink,
+ .sink_comp = ss_sink_comp,
+ .source = ss_source,
+ .source_comp = ss_source_comp,
+ .intr = intr,
+ .intr_comp = ss_intr_comp,
+};
+
+const struct func_desc ptp_fs_descriptors = {
+ .intf = ptp_interface_desc,
+ .sink = fs_sink,
+ .source = fs_source,
+ .intr = intr,
+};
+
+const struct func_desc ptp_hs_descriptors = {
+ .intf = ptp_interface_desc,
+ .sink = hs_sink,
+ .source = hs_source,
+ .intr = intr,
+};
+
+const struct ss_func_desc ptp_ss_descriptors = {
+ .intf = ptp_interface_desc,
+ .sink = ss_sink,
+ .sink_comp = ss_sink_comp,
+ .source = ss_source,
+ .source_comp = ss_source_comp,
+ .intr = intr,
+ .intr_comp = ss_intr_comp,
+};
+
+const struct functionfs_strings mtp_strings = {
+ .header = {
+ .magic = htole32(FUNCTIONFS_STRINGS_MAGIC),
+ .length = htole32(sizeof(mtp_strings)),
+ .str_count = htole32(1),
+ .lang_count = htole32(1),
+ },
+ .lang0 = {
+ .code = htole16(0x0409),
+ .str1 = STR_INTERFACE,
+ },
+};
+
+const struct usb_os_desc_header mtp_os_desc_header = {
+ .interface = htole32(1),
+ .dwLength = htole32(sizeof(usb_os_desc_header) + sizeof(usb_ext_compat_desc)),
+ .bcdVersion = htole16(1),
+ .wIndex = htole16(4),
+ .bCount = htole16(1),
+ .Reserved = htole16(0),
+};
+
+const struct usb_ext_compat_desc mtp_os_desc_compat = {
+ .bFirstInterfaceNumber = 0,
+ .Reserved1 = htole32(1),
+ .CompatibleID = { 'M', 'T', 'P' },
+ .SubCompatibleID = {0},
+ .Reserved2 = {0},
+};
+
+const struct usb_ext_compat_desc ptp_os_desc_compat = {
+ .bFirstInterfaceNumber = 0,
+ .Reserved1 = htole32(1),
+ .CompatibleID = { 'P', 'T', 'P' },
+ .SubCompatibleID = {0},
+ .Reserved2 = {0},
+};
+
+const struct desc_v2 mtp_desc_v2 = {
+ .header = {
+ .magic = htole32(FUNCTIONFS_DESCRIPTORS_MAGIC_V2),
+ .length = htole32(sizeof(struct desc_v2)),
+ .flags = FUNCTIONFS_HAS_FS_DESC | FUNCTIONFS_HAS_HS_DESC |
+ FUNCTIONFS_HAS_SS_DESC | FUNCTIONFS_HAS_MS_OS_DESC,
+ },
+ .fs_count = 4,
+ .hs_count = 4,
+ .ss_count = 7,
+ .os_count = 1,
+ .fs_descs = mtp_fs_descriptors,
+ .hs_descs = mtp_hs_descriptors,
+ .ss_descs = mtp_ss_descriptors,
+ .os_header = mtp_os_desc_header,
+ .os_desc = mtp_os_desc_compat,
+};
+
+const struct desc_v2 ptp_desc_v2 = {
+ .header = {
+ .magic = htole32(FUNCTIONFS_DESCRIPTORS_MAGIC_V2),
+ .length = htole32(sizeof(struct desc_v2)),
+ .flags = FUNCTIONFS_HAS_FS_DESC | FUNCTIONFS_HAS_HS_DESC |
+ FUNCTIONFS_HAS_SS_DESC | FUNCTIONFS_HAS_MS_OS_DESC,
+ },
+ .fs_count = 4,
+ .hs_count = 4,
+ .ss_count = 7,
+ .os_count = 1,
+ .fs_descs = ptp_fs_descriptors,
+ .hs_descs = ptp_hs_descriptors,
+ .ss_descs = ptp_ss_descriptors,
+ .os_header = mtp_os_desc_header,
+ .os_desc = ptp_os_desc_compat,
+};
+
+const struct desc_v1 mtp_desc_v1 = {
+ .header = {
+ .magic = htole32(FUNCTIONFS_DESCRIPTORS_MAGIC),
+ .length = htole32(sizeof(struct desc_v1)),
+ .fs_count = 4,
+ .hs_count = 4,
+ },
+ .fs_descs = mtp_fs_descriptors,
+ .hs_descs = mtp_hs_descriptors,
+};
+
+const struct desc_v1 ptp_desc_v1 = {
+ .header = {
+ .magic = htole32(FUNCTIONFS_DESCRIPTORS_MAGIC),
+ .length = htole32(sizeof(struct desc_v1)),
+ .fs_count = 4,
+ .hs_count = 4,
+ },
+ .fs_descs = ptp_fs_descriptors,
+ .hs_descs = ptp_hs_descriptors,
+};
+
+}; // namespace android